Catch for swinging doors



I' (No Mad-e1.)

PSWEBT. 'GATGH VPOR; SWINGING nouns. N Q.- 568,638. l Patented Sept-29, 1896.

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` UNITED STATES? PATENT QFFICE.

FRANKLIN SWEET, OF MILWAUKEE, l/VISCONSIN.

CATCH FOR SWINGING DOORS.

SPECIFICATION forming part of Letters Patent No. 568,638, dated September 29, 1896.

Application led February 28, 1896. Serial No. 581,229. (No model.)

To @ZZ whom, it may concern:

Be it known that I, FRANKLIN SWEET, of Milwaukee, in the county of Milwaukee and State 'of Visconsin, have invented a new and useful Improvement in Catches for Swinging Doors, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

My invention has relation to improvements in catches for swinging doors.

Y The device is particularly applicable for doors which are adapted to swing freely in both directions, such as the closet-doors in hotels and large buildings, doors between adjacent rooms or hallways, or outside screendoors. It may also be used to advantage in connection with "swinging gates, swinging blinds, and the like.

In the use of doors of the above character it is frequently advisable that said doors be held in their closed positions against swinging. This is particularly true in regard to closet-doors and outside screen-doors.

It is the object of my invention to provide a simple catch for the purpose above described; and in connection with said catch a lock adapted toautomatically lock the catch against being ythrown from one side of the door out of engaging position.

Vith the above primary objects in view the invention consists of the devices and parts or their equivalents, as hereinafter more fully set forth.

In the accompanying drawings, Figure lis a side elevation of a fragment of a door and its jamb with'my improved catch secured to the door and engaging the jamb, the view illustrating the simplest form of my invention. Fig.' 2 is a plan view of Fig. l with parts in section and parts broken away. Fig. 3 is a similar view to Fig. 2, showing an automatic locking device inl connection with my invention. Fig. 4 is a side elevation of Fig. 3 with the head of the bolt removed. Fig. 5 is an outer side elevation of one of the outside plates of Fig. 3. Fig. 6 is a detail view of the sleeve, Fig. 3; and Fig. 7 is a view illustrating a modification of the locking mechanism. A

Referring to the drawings, the numeral S indicates a swinging door, and 9 the jamb thereof. Fig. 3 shows a gate in which the hinged joint is at an opposite edge to the hinged edge of the gate shown in Figs. l and 2. Where the device is used in connection with a swinging gate, blind, or the like, then the part designated by the numeral S would be the swinging gate or blind, and 9 the iiXed part adjacent to the free edge thereof.

In Figs. l and 2 the device is shown as applied to the door near the unhinged edge thereof, while in Fig. 3 it is shown as applied to the j amb. The device will work equally well in either of these modes of application. The structure employs a transverse shaft lO, which passes loosely through a transverse opening ll in the door or jamb, as shown. Annular plates l2 l2' are fitted against the sides of the door or of the jamb and are provided with central apertures which register with the transverse openin g Il. These plates are formed orprovided with inwardly-extending bushings 13 I3', which project into the opening l1 for a desired distance and loosely surround the shaft. Preferably each plate is provided upon its outer face with two lugs I4 14.', the former being arranged horizontally and the latter vertically and obliquely and at some distance from the first-named lug. While I have shown and described both of the plates as provided with these lugs, and which is the preferable arrangement, yet, if desired, only one of said plates may be provided therewith and the function desired accomplished. One end of the shaft is provided with a head l5, while the opposite end thereof is threaded to receive thereon a nut 16. Arms 17 17 are Iitted upon opposite ends of the shaft. The arm 17 is held thereon against the plate adjacent by the nut 16, and the arm I7 in Figs. l and 2 is shown as mounted on the shaft, between the head thereof and the outer face of the plate 12 adjacent. Both of these arms are tightly mounted on the shaft, so as to move in unison therewith.

In the use of the device, when it is desired that the door should swing freely, the arms are thrown up to the substantially perpendicular position illustrated by the dotted lines in Fig. l. As the lugs I4 are at a lateral Obliquity, the arms are held to the position to which they are thus adj usted. Now, when the door is closed and it is desired IOO to keep it in such position and prevent its being swung open in either direction, the arms are thrown downwardly to the extent permitted by the lugs 14, said lugs acting to support the arms in such position. These arms, it will be noticed, are arranged suffieiently far apart to straddle the door or the jamb, as the ease may be. This, it is obvious, will eifeetually prevent the door from being swung open in either direction.

The mechanism for locking the arms when in their horizontal position against being thrown upwardly by raising the outside arm, while at the same time permitting this to be readily accomplished from the inside, will now be described. In Figs. 3, 1-, 5, and G 1 have shown one form for accomplishing this function, and in Fig. 7 still another form, which latter form, perhaps, by reason of its greater simplicity, will be found the most desirable construction for general adoption.

Referring now particularly to Figs. 3, 1, 5, and G, it will be seen that the circumference of the bushing 13' is considerably greater than the corresponding bushing in Figs. 1 and 2. This enlarged bushing accommodates a sleeve 18, surrounding the shaft. This sleeve is provided with an oblique slot 19, into which extends from the shaft a pin 20. The sleeve is also provided with an outwardly-extending linger 21, which passes through a slot 22, branching from the central opening of the plate 12', and enters a segmental slot 23 in the arm 17 The shaft 10 is also provided at this end with a laterally-extending lug 2-1, which is received in another segmental slot 25 in the arm 17C The enlarged bushing 13' is advisably provided with an opening 2 so as to admit access to the screw-pin 2O for the purpose of removing the same when necessary to disassemble the parts.

The arm 17 is the arm upon the outside of the door, while the arm 17 is upon the inside thereof. ln the position of the parts illustrated in Fig. 3 the arms are locked in their horizontal position against any power applied to the outside arm 17 It will be apparent that the uplifting of this arm is prevented by reason of the contact of the edge of the segmental slot 23 with the edge of the finger 2l, said 'fin ger bein g prevented from being' turned by reason of the fact of its extending through the branch slot 22, which is in the iixed plate 13. Now, if it is desired to unlock the arms from the inside of the door, the arm 17 is raised, and by reason of the pin 2O acting against the edge of the oblique slot 1f) the sleeve 18 will be forced inwardly a sul'lieient distance to draw the iin ger 21 free of the slot 22. At the moment this movement is com pleted the lug 21- of the shaft will have traveled the length of the segmental slot 25, and by reason of its contact with the edge of said slot will cause the uplifting of the arm 17. When the arms are thrown down from a per pendieular position to a horizontal position, it is obvious that the arm 17 will bc automatically locked by reason of the parts assuming the position illustrated in Fi il.

Referring now to the modified form illustrated in Fig. 7 of the drawings, it is to be stated in explanation of this ligure that if applied to the door represented in Fig. 3 it would be adjusted to that side of said door which is in alinement with the arm 17 of Fig. 3, which would represent the inside of the door. The viewis a cross-section through the shaft, looking toward the inner side of the annular plate, which in this figure is designated by the numeral 12. The shaft is provided with a cutaway portion to form, a shoulder 27, which shoulder is adapted to be engaged. by a complementary shoulder 2S on a dog 29, pivoted to the inside of the plate. The end of the dog beyond this shoulder is advisably curved to the arc of a circle, and its extremity normally rests against a pin 30, extending inwardly from an annular boss 31 of arm 17. A spring bears upon the upper edge of the dog to normally hold it in locked engagenient.

The annular plate 12 is provided centrally with an opening which receives the annular boss 31, the greater portion of the plate standing out from the side of the door or jamb to provide an inner chamber or recess in which the dog works. In this form of device the arm 17 is also provided with a segmental slot similar to the slot 25 of Fig. 3. The shaft is also provided with a laterally-extendin g lug similar to the lug 2l of Fig. 3, and which lug is adapted to workin the segmental. slot 25. In the operation of this form of the device, if it should be attempted to raise the outer arm, this would be effectually prevented by reason of the Contact of the two shoulders 27 and 28. The inner arm, however, is free to be raised, inasmuch as when lifted upwardly the edge of the slot 25 moves away from the lug 2l, and consequently there is no rotation imparted to the shaft. the free extremity of the dog 29 said dog is raised, so to throw its shoulder 28 out of engagement with the shoulder 27 of the shaft. By the time the shoulders are thus out of engagement the opposite edge of the slot 25 will have reached the lug 2-l, and by acting 011 said lug will cause the shaft to be rotated, and consequently the outside arm to be also uplifted.

Inasmuch as in both the forms shown in Figs. El and 7 there is lost motion in the arm where the locking mechanism is located, itbecomes necessary to arrange the lug 1t' which limits the upward movement of the other arm further back than the lug 1-1 which limits the upward movement of the first-named arm.

lVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In a catch for swinging doors, and the like, the combination, of a swinging part and a fixed part, a shaft extending through one of said parts, arms mounted upon opposite ends of said shaft, and. adapted to be turned As the pin 30 acts uponv TOO IIO

down so as to straddle the other of said parts, and means, when the arms are in their straddling position, for locking one of the armsl against movement by force applied directly thereto, while permitting both arms to be moved by force applied to the otherarm.

2. In a catch for swinging doors, and the like, the combination, of a swinging part, a fixed part, a shaft extending through one 0f said parts, arms mounted upon opposite ends of said shaft, and adapted to be turned down so as to straddle the other of said parts, and means, when the arms are in their straddling position, for automatically looking one of the arms against movement by force applied directly thereto, while permitting both arms to be moved by force applied to the other arm.

3. In a catch for swinging doors, and the like, the combination, of a swinging part, a

fixed part, a shaft extending through one of said parts, said shaft provided near one end with a projecting lug, a plate provided with an Opening through which the shaft passes, arms upon opposite ends of the shaft, one of said arms provided with an elongated slot into which the lug of the shaft enters, and further provided with an inwardly-extending pin, and a part constructed to normally engage the shaft, but adapted to be thrown out of engagement therewith by the pin of the arm by force applied directly to the arm carrying said pin.

In testimony whereof I affix my signature in presence of two witnesses.

' FRANKLIN SVEET. Witnesses:

ARTHUR L. MoRsnLL,

ANNA V. FAUST. 

